Casting apparatus.



A. JAMESON,- GASTING APPARATUS.

APPLICATION FILED MAR. 4, 1908.

950,106. Patented Feb'.l22,191o.

ALEXANDER Jameson', or mnmnaroms, INDIANA.-

cas'rme APPARATUS.

Application filed March 4, 1908. Seria'l Nol 419,080.

To all 'whom 'it may concern:

Be it known that I, ALEXANDER JAMESON, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Casting Apparatus, of which the following is a specification. V

In the Casting of very small articles from gold and other similar metals, such for instance as metal inlays for teeth, jewelry, etc., difficulty is experienced in obtaining sharp and perfect` castings owing to the sluggishness of the metal and the necessarily comparatively small mass of molten metal.

My present invention, which is the basis of the apparatus described and claimed in my pending application Serial Number 381,416, relates to a machineday means of which castings of the character described` may be easily and perfectly made. To this end I provide a mold and immediately adjacent Crucible in which gold and' other similar metal may be melted, and means by which the mold and molten metal in the 'Crucible may be suddenly moved, after the melting has been accomplished, so. as to cause the metal to flow into the mold. The accompanying drawings illustrate an embodiment of my invention in a machine especially designed for'use by dentists althpngh by no means limited to such use.

Figure 1 is a front elevation with the machine .arranged to operate in a vertical plane; Fig. 2 a side'elevation; Fig. 3 a section on line 3 3 of Fig. 1 and the main body of the machine Aarranged as it would be for operation in a horizontal plane;

4 a section in line 4-4 of Fig. 3, and Figs. 5 and 6 details of the mold and adjacent Crucible.

In the drawings .10 indicates a mold which may be conveniently made by investing the pattern in a hardening plastic and IAthen vburning or melting the pattern so as to leave the hollow or receptacle 11, access being given thereto through the usual contracted sprue or gate .passage 12. The mold 10 may be convenientlv formed in a holder 13 adapted to be' readily slipped into or out of a Crucible holder or arm 14 which carries a Crucible 15 having a basin or cup and an outlet passage 16 which leads directly to the outer, or receivin sage 12. The Crucibz 15 must be of some refractory material and 'should f be so formed, as indicated in the drawings, that in it. may be melted-blowpipe heat or otherwise-a suiicient quantity of metal, such as gold, to lill the mold. Arm 14 is Carried end of the gate pasby a rotatable shaft 17 mounted in a suit- ,n able case 18 and se'cured to said shaft is one end of a spring 19 the other end of which is secured to the case. A suitable brake or catch 2O operating against a balance wheel 21 is provided lto normally prevent the rotation of the shaft by the spring. Of course any other motor may be used to drive the shaft but such motor should be of such character that the mold and molten metal may be moved suddenly at a comparatively high speed soy that the molten metal will be caused to How into all parts of the mold while it is still hot enough to'be fluid.

If desired, arm 14 may carry a mold and Crucible at each end at opposite sides of the axis of revolution and by such an arrangement two operators may use the apparatus simultaneously if it is arranged to operate in a horizontal plane.

` The case 18 incloses the arm 14 so as to form a chamber 22 in which any flying ortions of metal will be Caught and save In order to adapt the device for use in either a horizontal or a vertical plane I have provided it with two bases 23 and 24 as shown and arm 14 is provided at each end with a fork 25, into which the mold-Cup may be slipped, and a flange or lip 26 whichwith the` fork-forms a Crucible-retainer into which the Crucible may be put either in a plane at right anglestothe axis of revolution or in a plane parallel therewith, as shown in Figs. 5 and 6. Y

In operation;the mold and its Crucible are associated in the mannerA shown in the drawings and the spring wound up. Gold or other metal is placed 1n the Crucible, Vmold and metal heated, by blow-pipe or otherwise, until the gold is melted. Shaft 17 is then released and immediately put into rapid molow of the mold so as to sharply till the same.

tion so that the molten metal is driven by centrifugal force into all parts of the hol- I am` aware of Patent No. 510,999 issued e December 19, 1893 to J. L. Lebenius and disclaim the structuretherein shown.

mold, a melting crucible having device the part a is merely a sprue or passage to themolds andmust necessarily be su stantially at the center of rotation and must be annular in form in order that a continuous stream of molten metal can be poured into the same. Its capacity must also be considerably less than themold or molds to which it delivers. l

I claim as my invention 1. A casting apparatus, comprising a rotatable arm, a mo d supported on sald arm at a point distant from its axis, and a melting crucible also carried lby said arm adjacent rthe ,mold between the mold and the axis of revolution and arranged to discharge into the mold. j v i 2. A casting apparatus, comprising a mold, means for revolving said mold a out an external axis, and a ranged" between the mouth of said mold and the axis of revolution and so as to discharge into the mold.

3. A` casting apparatus, comprising a mold having a contracted entrance, a melting crucible arranged at the mouth of said entrance to discharge thereto, and means for revolving said crucible and mold about an axis external to the mold to cause the molten metal to flow by centrifugal force into the mold.

4. A casting apparatus, lcomprising a a capacity at least equal to the mold arranved ad] acent the mouth of said mold to disebarge thereto, and means for revolving said mold and crucible around an axis external to the mold to cause the metal to ow by centrifugal force into the mold.

5. A casting apparatus, comprising a mold, amelting crucible having a capacity at leastequal to the mold arranged ad] acent the mouth of said mold to discharge thereto, means for revolving said mold and crucible suddently around an axis external to the mold to cause lthe metal to flow by centrifugal force into the mold, and means for normally restraining such movement.

6. A casting apparatus, comprising a mold, a melting crucible having a capacity at least equal to the mold arranged to liver thereto, and means for moving the mold and crucible in such direction as, to cause the molten metal in the crucible to dow by centrifugal force into the mold.

.7. A casting apparatus, comprising a mold, a melting crucible having a capacity at least equal to the mold arranged to deliver thereto, means for'suddenly moving the mold and crucible in such direction as to cause the molten metal in the crucible to y flow by centrifugal force into the mold, and

means for normally restraining such movement. v

8. A casting apparatus, comprising an arm, means by which said arm may be melting crucible arswung, a melting crucible carried by said arm near its outer end and a mold also car.- ried by the arm beyond the crucible in position to receive molten metal therefrom by centrifugal force.

9. A casting apparatus, com rising a main case, a shaft ]ournaled in sai case, amotor for driving said shaft, means for controllin the motor, a radially extending arm carrie by the shaft, a mold carried at the outer end of the arm, and a melting crucible also carried by the arm near 1ts outer end in position to deliver to the mold.

10. A casting apparatus, comprising a main case, having two bases adapted to support the case in either of two positions substantially at` right angles to each other, a shaft journaled in said case, a motor for driving said ried by the shaft, a mold carried at the outer end of the arm, and a melting crucible also carried by the arm near its outer end in posi-V tion to deliver to the mold.

11. A casting apparatus, comprising a main case, av shaft ournaled in said case, a motor for driving said shaft, means for controlling the motor, a radially extending arm carried by the shaft, a mold carried at the outer end of the arm, and-a melting crucible also carried by the arm near its outer end in position to deliver to the mold, a portion of ythe case forming a chamber within whichare arranged the arm and the parts carried thereby.

12. A casting apparatus, comprising a main case, having two bases adapted to support the case in either of two positions substantially at right angles to `each other, a shaft journaled in said case, a motor for driving said shaft, means for controlling the motor, a radially extending arm carried by the shaft, a mold carried at the outer end of the arm, and a melting crucible also carried by the arm near its outer end in position to deliver to the mold, a portion of the case forming a chamber within which are arranged the arm and the parts carried thereby.

13. A machine of the class described, comprising a standard, a spring actuated arm arranged for rotation thereon, means whereby a flask is detachably positioned on the arm, and a metal holding plate detach-ably arranged on the-arm in front of the flask holdingmeans.

14. A machine of the class described comprising a vertically disposed revoluble body,` a melting tray carried by said body, and a. flask carried by the melting tray and arranged to receive therefrom molten metal impelled by centrifugal force.

15. A molding machine having a iask, a crucible for molten metal operatively assembled in relation to the flask, and meansI shaft, means for controllingl the motor, a radially extending arm car-l for overturning the flask and Crucible to forcefully throw the molten metal outy into the flask.

18. In a molding machine, a flask, a crucible engaging the flask, and overthrowing rotary means to which the Crucible and flask are connected and operating the latter to forcefully throw .the molten contents of the crucible into the flask.

19'. In a molding machine, a rotary shaft having an overthrowing arm, a. flask and Crucible removably held by the arm, and means' for rotating the shaft. ,l

20. In a. molding machine, a rotary shaft, a flask and Crucible connected to the shaft, the flask and Crucible being overturned by the shaft, means for holding theshaft in immovable position, and means for rotating the shaft when the latter is released.

.21. In a molding machine, a rotary shaft having a flask and Crucible connected thereto, the flask and Crucible having an overthrowing operation in relation to'the shaft, means for holding the shaft against movement, and means for turning the shaft when released. v

22. In a molding machine, a rotary shaft, a flask support connected to the shaft, a flask removably mounted in the support, and a Crucible having one extremity operatively engaging one end of the flask, the flask support, flask and Crucible having an overthrtwing movement imparted thereto by the s ia t. l

23. In a molding machine, a flask support, a flask removably mounted in the support, and a Crucible operatively engaging oneextremity of the flask, the flask support, flask and crucible having movement imparted thereto.

24. In a moldingmachin'e, a rotary shaft, a flask and Crucible Connected to the shaft, means for holding'the shaft in immovable position, and means for rotating -the shaftl when the. latter is released.

25. A machine for casting dental inlays or other articles, comprising a bar mounted to rotate in a vertical plane, a mold-holder mounted at each extremity of the bar, a mold remova' ly connected therewith, a pan mounted on the bar in front of the mold, a

spring for rotating the bar and a ratchet and pawl constructed fort locking the bar in the desired position of adjustment, substantially as described. l

26. A machine for casting dental Linlays or other articles, comprising a bar mounted to rotate in a vertical plane, and equipped at each extremity with a mold-holder and a mold removably Connected therewith, a pan mounted in front of each mold-holder, a spring normally detached from the bar, means for connecting the spring and bar, whereby the spring may be placed under tension by rotating the bar in a given direction, means for locking the bar in the adjusted position with the spring under tension, the said means being adapted to release v cthe bar and allow it to rotate in response to the recoil of the spring, substantially as described.

27. A machine of the class described, comprising a spring-aCtuated-bar mounted to rotate in a vertical plane, and having means mounted at each extremity thereof for casting dental inlays or other articles, and a pan loc-ated in front of each mold, and in position to allow the molten metal `placed therein lto be driven into the mold by the centrifugal force developed by the rotation of the bar,.substantially as described.

28. The Combination with a suitable frame, of a spindle journaled in the frame, a bar fast on the spindle, and having a moldholder at each extremity, a mold removably Connected with the holder, a pan mounted" in front of each mold, a spring mounted on the spindle, and a suitable -Connection between the spring and the bar, whereby when rection when the latter is released, whereby the centrifugal force is developed for carrying molten metal from the pan into the /the latter is rotated in one direction the molds of'the bar, substantially as described..

29. A machine of the Class described, comprising a bar mounted to rotate in a vertical plane, a mold-holder mounted at each extremity of the bar, a mold removably connected with the holder, a pan removably connected with the bar and located in front of each mold, and means connected with the bar for rotating the same to develop the necessary Centrifugal force to carry molten metal from the pans into the molds, sub# stantially as described.

In witnesss whereof, I. have hereunto set my hand and seal at Indianapolis, Indiana,

this second day of March, A. D., one thousand nine hundred and'eight. 'f

ALEXANDER JAMESON. [La] Witnesses: THOMAS W.' MCMEANS, .Y FRANK A. FAHLE. 

